Ingress-Nginx regex routing rule with named capture group in path - kubernetes-ingress

Question

I'm creating Kubernetes Ingress resources for an nginx Ingress Controller. The paths that I'll be using have an ID that I need to extract into a variable that may be in a different location in the path. E.g.:
http://myservice/environment/<someenv>/room/<roomid>
http://myservice/join/<roomid>
If I use a non-named capture group in the regex then the first path roomid will be $2 and for the second it'll be $1. Ideally I would be able to use a named capture group to assign it to a specific variable that I can easily use but creating an Ingress with the following path with a named capture group results in an error
# ingresses.networking.k8s.io "nginx-consistent" was not valid:
# * spec.rules[0].http.paths[0].path: Invalid value: "/join/(?<roomid>.*)": must be a valid regex
Is there a supported way to use named capture groups?
The current configuration doesn't have much interesting in it. The following is a trimmed down config.
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
name: {{.Release.Name}}-nginx-route-by-roomid
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/upstream-hash-by: "roomid-$roomid"
nginx.ingress.kubernetes.io/use-regex: "true"
nginx.ingress.kubernetes.io/configuration-snippet: |
proxy_set_header ingress-handler nginx-route-by-roomid;
spec:
rules:
- http:
paths:
- backend:
serviceName: {{ .Values.service.serviceName }}
servicePort: {{ .Values.service.servicePort }}
path: /api/v1/rooms/(?<roomid>[^/]*)
- backend:
serviceName: {{ .Values.service.serviceName }}
servicePort: {{ .Values.service.servicePort }}
path: /api/v1/players/([^/]*)/rooms/(?<roomid>[^/]*)